Hm, maybe one is not allowed to enter an ERA in the judged show? Seems kind of odd they wont allow US kits there as it is called the import/kit car nationals and a COBRA is the banner in their ad for it:
http://www.carsatcarlisle.com/schedule/import/index.asp
Also, ERA has been there for many year, as has SPF and others..why would they turn away their money?
Jordan